Lesson 6 Flashcards
(39 cards)
Three phenotypic categories of bacteria
Gram negative and have cell wall
Gram positive and have cell wall
Lack cell wall
Bacteria’s shape os usually about
0.2 m to 10.0 m
Three basic shapes of bacteria
Cocci
Bacilli
Spirilla
Bacteria reproduce by ______
Binary fission
Bacterial cell split into two cells
Binary fission
Pair cocci
Diplococci
Chains of cocci
Streptococci
Cluster of cocci
Staphylococci
Some rods are quite short, resembling elongated cocci
Coccobacilli
Example of bacilli
Escherichia
Klebsiella
Salmonella
Shigella
The cause of syphilis
Treponema
Bacteria that exist in a variety of shapes
Pleomorphic
A glass microscope slide
Smear
Two common methods of fixation
Heat fixation
Methanol fixation
Passing the smear through Bunsen Burner Flame
Heat fixation
Flooding the smear with absolute methanol for 30 seconds
Methanol fixation
A dye applied in smear
Methylene blue
To observe bacterial capsules, spores, and flagella
A. Structural staining procedures
B. Differential staining procedures
A
The gram and acid-fast staining procedures
A. Structural staining procedures
B. Differential staining procedures
B
Gram staining procedure is developed by
Dr. Hans Christian Gram
These species are often identified using a staining procedure called acid-fast stain
Mycobacterium
This is useful in the tuberculosis laboratory / TB lab
Acid-fast staining
Thr acid fast staining procedure was developed by
Paul Ehrlich
A bacteria is able to swim is called
Motile